This artist’s impression shows the first interstellar asteroid: `Oumuamua. This unique object was discovered on 19 October 2017 by the Pan-STARRS 1 telescope in Hawai`i. Subsequent observations from ESO’s Very Large Telescope in Chile and other observatories around the world show that it was travelling through space for millions of years before its chance encounter with our star system. `Oumuamua seems to be a dark red highly-elongated metallic or rocky object, about 400 metres long, and is unlike anything normally found in the Solar System. – Image credit: ESO/M. Kornmesser

LATEST VIDEOS

A new interview with Dr. Abraham "Avi" Loeb from Harvard and update on the subject of Oumuamua. We detailed point for point his findings that Oumuamua is an extremely strange object, regardless of its origins, and that it may be consistent with a light sail of some type. This is part one of a two part interview with Dr. Loeb.
Have Aliens Found Us? A Harvard Astronomer on the Mysterious Interstellar Object ‘Oumuamua :
https://www.newyorker.com/news/the-new-yorker-interview/have-aliens-found-us-a-harvard-astronomer-on-the-mysterious-interstellar-object-oumuamua
"‘Oumuamua’s Geometry Could be More Extreme than Previously Inferred", Siraj and Loeb, 2019.
https://www.cfa.harvard.edu/~loeb/SL.pdf
6 Strange Facts about the Interstellar Visitor Oumuamua:
https://blogs.scientificamerican.com/observations/6-strange-facts-about-the-interstellar-visitor-oumuamua/
"COULD SOLAR RADIATION PRESSURE EXPLAIN ‘OUMUAMUA’S PECULIAR ACCELERATION?", Bialy and Loeb, 2018
https://arxiv.org/pdf/1810.11490.pdf
Is Oumuamua A Light Saul? Featuring Dr. Avi Loeb: https://youtu.be/VlpVIyBCG3s
Why The Universe May Be Full Of Alien Civilizations Featuring Dr. Avi Loeb: https://youtu.be/6ckgBxRASTo
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Q&A 74: Can We Be Ready for the Next Oumuamua? And More...

In this week's questions show, I wonder what we'd do if we actually found life, if we can be ready for the next interstellar asteroid, why the Mars 2020 rover is going to help with sample return and more.
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Our Book is out!
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00:45 What if we did find life?
02:40 Next Oumuamua
04:31 How will Mars 2020 help with sample return?
06:29 Could you have a triple star system?
07:48 Can we observe continents on other planets?
09:22 Why do I live in the land of the Ewoks?
10:11 Why don't we remake Hubble?
12:26 Should we disassemble Mercury?
14:31 Could the Moon get into the Roche limit?
16:41 Can galaxies disappear over the cosmic horizon?
18:35 How can we see the CMB?
21:00 Could two planets touch each other?
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Does Interstellar Panspermia Seed Life? Featuring Dr. Karen Meech

John Michael Godier discusses if there could be life on ice shell moons like Europa and Enceladus and the possibility of interstellar objects such as Oumuamua seeding life on other planets with Dr. Karen Meech of the University of Hawaii which discovered the first interstellar object Oumuamua, with the Pan-STARRS 1 telescope.
What is Oumuamua? With Dr. Karen Meech: https://youtu.be/8Q7TzLH2cRA
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10 Reasons Why Oumuamua Will Blow Your Mind

10 Reasons the first discovered interstellar object Oumuamua will blow your mind.
1I/2017 U1, or Oumuamua, which has turned out to be one of the strangest objects yet seen by astronomers. The University of Hawaii discovered the first interstellar object, named 'Oumuamua, with the Pan-STARRS 1 telescope in November of 2017.
The Mysterious Interstellar Object Oumuamua: https://youtu.be/UwNqdc788QM
What Is 'Oumuamua? With Dr. Karen Meech:
https://youtu.be/2HBgsiOGOwI
What Does 'Oumuamua Look Like? Featuring Dr. Karen Meech: https://youtu.be/8Q7TzLH2cRA
Is 'Oumuamua a Light Sail? Featuring Dr. Avi Loeb: https://youtu.be/VlpVIyBCG3s
The story of 'Oumuamua, the first visitor from another star system | Karen J. Meech: https://youtu.be/rfi3w9Bzwik
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"DISCOVERY AND CHARACTERIZATION OF THE FIRST KNOWN INTERSTELLAR OBJECT", Meech et al, 2017
https://www.eso.org/public/archives/releases/sciencepapers/eso1737/eso1737a.pdf
"Six Strange Facts About`Oumuamua", A. Loeb, 2018
https://arxiv.org/abs/1811.08832
"Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration?", Bialy and Loeb, 2018
https://arxiv.org/abs/1810.11490
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Harvard scientists think that the first interstellar object detected in our solar system, called “Oumuamua,” could be an alien spacecraft. The scientists sought to explain a quirk in Oumuamua's behavior, which led them to an unusual conclusion. No one knows what Oumuamua is or where it came from, and it's too late to find out for sure.
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#Aliens #Space #ScienceInsider
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Why Harvard Scientists Think This Object Is An Alien Spacecraft

Another episode of Night Sky News for this month - the first half what you can see in the sky this next month and the second half a recap of the space news of the last month.
Tune in for how to catch Comet Wirtanen and the Geminids Meteor Shower in December. In this episode I chat about the retirement of the Kepler Space Telescope, the discovery of Antlia 2, a new dwarf galaxy around the Milky Way, and the discovery of a super-Earth exoplanet around Barnard's star. I also explain why astronomers have claimed that the interstellar object 'Oumuamua *might* be an alien space probe, and discuss the controversial news about the new Thirty Meter Telescope.
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'Oumuamua Is Not Aliens

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To repeat the space time maxim: it’s never aliens … until it is. So let’s talk about ‘oumuamua.
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Bialy & Loeb (2018)
https://arxiv.org/pdf/1810.11490
Micheli et al. (2018)
https://go.nature.com/2A9FncQ
Last year a visitor came to our inner solar system. To us it looked like a faint spot of light, moving quickly relative to the fixed stars. We’d seen similar things countless times before – lonely rocks, remnants from the formation of our solar system, drifting on their endless orbits around the sun and faintly glimmering with its reflected light. Nothing unusual about such asteroids and comets, but what made this object special was its trajectory. It was not in orbit around the Sun at all. Rather, it appeared to have fallen in from interstellar space, and was on its way back out again. The object is 1I/2017 U1, better known as ‘Oumuamua. It’s the first chunk of interstellar space debris we’ve ever spotted passing through our solar system. It caused a justifiable stir at the time. Hell, WE even did an episode on it.
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سلطان الخليفي

The first interstellar object, named 'Oumuamua, was discovered in October 2017 by the Pan-STARRS 1 telescope in Hawaii. The object is of unknown origin and could be a comet or asteroid. In this preview of Thursday's full episode, we spoke to Dr. Karen Meech, who leads the Astrobiology research team at the University of Hawaii and recently led the characterization to determine the size, shape, color and light curve of the first interstellar object – 'Oumuamua.
SHOW NOTE: Seth Shostak will be released on December 6th. For the latest updates and early access to episodes you can now support us on Patreon!
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Small Asteroid or Comet 'Visits' from Beyond the Solar System:
http://www.ifa.hawaii.edu/info/press-releases/interstellar/
Is the Interstellar Asteroid Really a Comet?:
http://www.ifa.hawaii.edu/info/press-releases/Oumuamua-06-2018/
"COULD SOLAR RADIATION PRESSURE EXPLAIN ‘OUMUAMUA’S PECULIAR ACCELERATION?", Bialy and Loeb, 2018
https://arxiv.org/pdf/1810.11490.pdf
Is 'Oumuamua a Light Sail? Featuring Dr. Avi Loeb:
https://youtu.be/VlpVIyBCG3s
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Is Interstellar Asteroid 'Oumuamua an Alien Lightsail? probably not.

Is 'Oumuamua an interstellar asteroid or alien lightsail? Astronomers form Harvard University suggest 'Oumuamua may in fact be a light sail from an alien civilization, which would explain why 'Oumuamua is accelerating. However, there's not much evidence 'Oumuamua really is an artificial object and simply not a kind of comet.
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Is Oumuamua an Alien Spacecraft?

In this video, we discuss the space object Oumuamua and the odd traits that make scientists question its origin. Oumuamua was discovered in October of 2017 and was quickly denoted as an interstellar object, due to its have speeds in our solar system. Over the course of a few months, astronomers all over the world were able to determine the approximate size, shape, and composition of this object, however, it didn't match what scientists had previously expected an interstellar object to be like. Over time, the object was also varying in its trajectory slightly, which brought up many more questions regarding the origin of these disturbances and what could be happening. Recently, scientists at Harvard suggest that this could be a solar sail, created by some intelligent alien species, trying to understand planet Earth. In this video we walk through the different known facts about Oumuamnu, and why it may or may not be an alien spaceship.
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#Oumuamua #Comet #Alien

According to Mother Nature Network, scientists believe they know where the bizarre, cigar-shaped interstellar object 'Oumuamua came from.
The unique rock was first spotted in October 2017 when the Pan-STARRS 1 telescope in Hawaii picked up a faint point of light moving across the night sky.
A team of scientists have narrowed down the possibilities of where the cigar-shaped object comes from to four stars — red dwarf HIP 3757, sunlike star HD 292249 and two other unnamed stars.
https://www.mnn.com/earth-matters/space/stories/bizarre-cigar-shaped-asteroid-another-star-and-unlike-anything-seen
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Harvard scientists say Oumuamua may be probe sent by "alien civilization"

A pair of Harvard scientists say a massive, fast-moving visitor to our solar system may have been a probe sent by an advance alien civilization. Astronomers were excited to discover the interstellar object last year. It was named "Oumuamua" that's Hawaiian for "messenger" or "scout." Tony Dokoupil reports.
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Harvard Scientists Say 'Oumuamua' Could Be A Solar-Powered Alien Probe

According to a report by Business Insider, scientists at Harvard have raised the possibility that a mysterious cigar-shaped interstellar object, the first of its kind in our solar system, could be a probe intentionally sent toward Earth from an alien civilization. Named, "Oumuamua," which means "a messenger from afar, arriving first," the object was first spotted in October of 2017 by a telescope in Hawaii. The metal-rich object, reportedly moving remarkably fast but not circling our sun, was about 750 feet by 115 feet and reddish in color.
https://www.businessinsider.com/harvard-scientists-interstellar-oumuamua-object-alien-probe-2018-11
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Is 'Oumuamua Really An Alien Spacecraft? (PROBABLY NOT)

The real news stories should say "Scientists Fail To Prove 'Oumuamua Isn't An Alien Spacecraft" - but the important part is that scientists did the math and know what to expect.
There is certainly a non-gravitational acceleration, and a lack of dust cloud means it can't be proven that the object is a comet, but that doesn't make it a spaceship either.
Original paper on Non-Gravitational acceleration
https://www.nature.com/articles/s41586-018-0254-4
New Paper running the numbers on the spaceship
https://arxiv.org/pdf/1810.11490.pdf
Also note - when correcting for camera rotation, make sure the intro and end cards don't get the correction too 🙂

The Mystery of Our First Interstellar Visitor Just Got More Complicated

New analysis shows that ‘Oumuamua is neither a comet nor an asteroid. What is it then?
If We Heard from Aliens, What Would It Look Like? - https://youtu.be/PswBhfUnwr0
Thumbnail image courtesy of ESA/Hubble, NASA, ESO, M. Kornmesser
Read More:
Chasing 'Oumuamua
https://www.nasa.gov/feature/jpl/chasing-oumuamua
“The interstellar object 'Oumuamua perplexed scientists in October 2017 as it whipped past Earth at an unusually high speed. This mysterious visitor is the first object ever seen in our solar system that is known to have originated elsewhere.”
1st Known Interstellar Visitor Gets Weirder: 'Oumuamua Likely Had 2 Stars
https://www.space.com/40020-oumuamua-interstellar-object-binary-star.html
“Our solar system's first known interstellar visitor is likely even more alien than previously imagined, a new study suggests.The mysterious, needle-shaped object 'Oumuamua, which was spotted zooming through Earth's neighborhood last October [2017], probably originated in a two-star system, according to the study.”
An Interstellar Visitor Both Familiar and Alien
https://www.nytimes.com/2017/11/22/science/oumuamua-space-asteroid.html
“In Fall [of 2017], the galaxy came calling in the form of a small reddish cigar-shaped object named Oumuamua by astronomers based in Hawaii. They discovered it in October, careening through the solar system at 40,000 miles an hour, an interstellar emissary from points unknown.”
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What Exactly is Oumuamua?

An exploration of the latest developments surrounding Oumuamua, the interstellar asteroid/comet/planet fragment. What is it? Where did it come from?
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Astronomers Get Closer To Finding Out Interstellar Object Oumuamua’s Home

Astronomers have gotten closer to identifying an interstellar object's home star.

The story of 'Oumuamua, the first visitor from another star system | Karen J. Meech

In October 2017, astrobiologist Karen J. Meech got the call every astronomer waits for: NASA had spotted the very first visitor from another star system. The interstellar comet -- a half-mile-long object eventually named `Oumuamua, from the Hawaiian for "scout" or "messenger" -- raised intriguing questions: Was it a chunk of rocky debris from a new star system, shredded material from a supernova explosion, evidence of alien technology or something else altogether? In this riveting talk, Meech tells the story of how her team raced against the clock to find answers about this unexpected gift from afar.
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ESOcast 167: VLT sees `Oumuamua getting a boost

Astronomers have found that ‘Oumuamua, the first interstellar object discovered in the Solar System, is moving away from the Sun faster than expected. Using data from ESO’s Very Large Telescope, and from NASA/ESA’s Hubble Space Telescope, a team of researchers concluded that ‘Oumuamua is most likely outgassing — suggesting that this enigmatic interstellar nomad is a peculiar comet rather than an asteroid.
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Directed by: Mathias Jäger.
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Editing: Martin Kornmesser.
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Footage and photos: ESO, ESA/Hubble NASA, ESA, Luis Calçada , M. Kornmesser and G. Hüdepohl (atacamaphoto.com).
Executive producer: Lars Lindberg Christensen.

A SETI Talk on 1I/`Oumuamua, the first known interstellar small body, possibly an asteroid which is probably coming from another planetary system. Its recent discovery by Pan-STARRS1 offers a rare opportunity to explore the planetary formation processes of other stars, and the effect of the interstellar environment on a planetesimal surface. Since its discovery, astronomers around the world have raced to use the most powerful ground-based and space-borne telescopes to collect information on its nature. Two astronomers, Meg Schwamb, astronomer at the Gemini Observatory in Hawaii and Matija Cuk, astronomer at the SETI Institute in Mountain View, will discuss the nature of 'Oumuamua, its color and shape in comparison with known small solar system bodies, as well as its origin derived from its extremely elongated shape and its orbit. They will show how its peculiarities seem to imply that 'Oumuamua is one of the most important discoveries of the decade in astronomy.
Matija Cuk is a Research Scientist at the SETI Institute. He received his Ph.D. degree from Cornell University in 2005. He uses computer simulations to study the past and present evolution of the orbits of the planets, moons and asteroids. His recent work focused on the origin of Earth's Moon, as well as the moons and rings of Saturn. In 2014 he was awarded the Harold Urey Prize for early career achievement from the Division of Planetary Sciences of the American Astronomical Society.
Meg Schwamb is an assistant scientist at the Gemini Observatory based in Hilo, Hawai'i. Meg's research focuses on how planets and their building blocks form and evolve, applying ground-based surveys to probe our Solar System's small body reservoirs. She is also involved in the Planet Four citizen science projects, which enlists the public to help study the seasonal processes of the Martian south pole and map the distribution of ridges on the Martian mid-latitudes. Meg also serves as co-chair of the Large Synoptic Survey Telescope's Solar System Science Collaboration. Meg was awarded the 2017 Carl Sagan Medal for Excellence in Public Communication in Planetary Science from the American Astronomical Society's Division for Planetary Science.

Neil DeGrasse Tyson: Is This Thing A Spaceship?

Astrophysicist and 'Astrophysics for People in a Hurry' author Neil deGrasse Tyson explains the science behind the first observed interstellar object to visit our universe (which Stephen knows is full of aliens).
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Astro News Bytes: An Interstellar Asteroid

We recently discovered the first-ever identified visitor from another solar system: the interstellar asteroid 'Oumuamua. You can get the whole story and more at astronomy.com.
http://www.astronomy.com/news/2017/11/interstellar-interloper
Astronomy magazine is the world’s best-selling astronomy magazine, offering you the most exciting visually stunning thorough, and timely coverage of the heavens above. Each monthly issue includes expert science reporting, vivid color photography, complete sky-event coverage, spot-on observing tips, informative telescope reviews, and more.
astronomy.com features daily news and weekly observing tips, as well as our Picture of the Day. We also invite you to check out our blogs, podcasts, and more.
All of this comes in an easy-to-understand user-friendly style that's perfect for astronomers at any level.
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Is Oumuamua A Spaceship?

The Solar System is currently being visited by an interstellar asteroid, Oumuamua. Is Oumuamua a spaceship? The interstellar asteroid is known as Oumuamua or 1I/ 2017 U1. In this video, we discuss Oumuamua and if the asteroid is artificial or a spaceship and future plans to study it and possibly orbit it.
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Other Interstellar Objects in the Solar System?

An exploration of the other suspected interstellar objects in the solar system.
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Music:
Cylinder Five by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
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Interstellar Object `Oumuamua Observed by Astronomers

Imagery of the `Oumuamua from the .2-meter William Herschel Telescope in La Palma in Spain's Canary Island is looped several times here. -- Full Story: https://www.space.com/39129-oumuamua-interstellar-object-comet-in-disguise.html
Credit: A. Fitzsimmons, QUB/Isaac Newton Group, La Palma.

Intercepting an Interstellar Object!

Today I use Orbiter Spaceflight Simulator 2016 to simulate an intercept of the interstellar object Oumuamua.
http://orbit.medphys.ucl.ac.uk/
Hubble's most recent Oumuamua image:
http://h.dropcanvas.com/rf169/oumuamuacandidate.jpg

No Signs Of Alien Technology Found On Mysterious Interstellar Object

Scientists say an initial study shows no signs of alien technology on the mysterious interstellar object.

An Interstellar Asteroid Just Flew Past Earth, Here’s What You Need to Know

In October, astronomers observed an interstellar asteroid for the first time. We talked to one of the first to study it, and here’s everything they’ve learned in the months since.
What’s Happening in Space? - https://www.youtube.com/watch?v=8XDS_aTVBrE&list=PL6uC-XGZC7X5q7Mibs4VifsPO6kt8XZ0V
Thumbnail image courtesy: ESO/M. Kornmesser
Read More:
A brief visit from a red and extremely elongated interstellar asteroid
https://www.nature.com/articles/nature25020
“Here we report observations and subsequent analysis of 1I/2017 U1 (‘Oumuamua) that demonstrate the extrasolar trajectory of ‘Oumuamua. Our observations reveal the object to be asteroidal, with no hint of cometary activity despite an approach within 0.25 au of the Sun.”
The First Interstellar Object to Be Seen May Have Just Visited Our Solar System
https://www.seeker.com/space/astronomy/the-first-interstellar-object-to-be-seen-may-have-just-visited-our-solar-system
“Astronomers may have spotted the first comet or asteroid to visit from beyond the solar system. They’re now scurrying to aim telescopes at the object, provisionally called A/2017 U1, to learn more about its mysterious origins.”
Massive Asteroid ‘Florence' Flies Past Earth at Record-Breaking Nearness
https://www.seeker.com/space/astronomy/massive-asteroid-florence-flies-past-earth-at-record-breaking-nearness
“A mountain-size space rock cruised past Earth this morning (Sept. 1) in a record-breaking encounter that has long had scientists drooling. At 8:06 a.m. EDT (1206 GMT) today, the roughly 2.7-mile-wide (4.4 kilometers) asteroid 3122 Florence came within a mere 4.4 million miles (7 million km) of Earth — just 18 times the distance from our planet to the moon.”
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NASA discovers asteroid likely not a spaceship

When a mysterious asteroid entered our solar system, experts had one chance to find out as much about it as they could.
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First-Ever-Observed Interstellar Object Will Be Studied For Extraterrestrial Life

Earlier this year, astronomers discovered what they think could be the first-ever-observed interstellar object. Chances are that it's an asteroid from another star system. But the unusual looking object has caught the attention of experts at Breakthrough Initiatives, which is on a mission to discover the first extraterrestrial intelligence beyond Earth. Experts are now using the Robert C. Byrd Green Bank Telescope to take a closer look.
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--------------------------------------------------
Following is a transcript of the video:
Breakthrough Initiatives is searching for intelligent life beyond Earth. The $100 million mission now has an unusual object in its sights. The object is called Oumuamua. Its thin, sleek shape is unlike anything ever seen before, which led astronomers to think it came from another star system. Its shape also has experts at Breakthrough intrigued. They say it's exactly what an alien spaceship might look like.
So, Breakthrough has decided to take a closer look, with radio telescopes on Earth. Oumuamua is currently about 186 million miles from Earth. That's twice the distance from Earth to the Sun. If the object is emitting any radio signals the telescope will detect the emissions in less than a minute. The chances that Oumuamua is an alien spacecraft are slim. More likely, it's an asteroid.
Either way, Breakthrough's mission will provide new information. It's expected to shed light on Oumuamua's chemical makeup. But Breakthrough will have to work fast. Astronomers predict that Oumuamua will leave our solar system in January 2019.

The Origin of 'Oumuamua, Our First Interstellar Visitor | Space Time

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We were recently visited by a traveler from outside our solar system. This is the first time we’ve ever seen an object that came to us from interstellar space. It's name is 'Oumuamua. Check out http://curiositystream.com/spacetime
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In this Space Time Journal Club we look into the origins of 'Oumuamua, an asteroid visiting us from beyond our solar system! We'll focus on the results of:
"The origin of interstellar asteroidal objects like 1I/2017 U1"
Portegies Zwart, Pelupessy, Bedorf, Cai & Torres 2017
https://arxiv.org/abs/1711.03558
On October 19th this year astronomers spotted an object moving rapidly away from the sun. The discovery was made by Pan-STARRS - the Panoramic Survey Telescope and Rapid Response System: a group of telescopes that constantly monitor the sky for moving or variable objects like asteroids or comets, It was initially thought to be a new comet, but after 34 days of follow up observations and a bit of orbital mechanics, it became abundantly clear that we were looking at the first object ever observed that came from outside our solar system. The mysterious object has been dubbed 1I: the first object in a brand new International Astronomical Union class, with “I” standing for “interstellar”. 1I also scored a more poetic name: 'Oumuamua, from the Hawaiian meaning “a messenger from afar arriving fast”.
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Starting Dec. 13, astronomers with the Breakthrough Listen project will monitor the first confirmed interstellar asteroid to find out if it's transmitting any artificial signals.

Is Oumuamua Artificial? 1I/2017 U1 Update for 12/12/17

The story of Oumuamua continues to grow increasingly mysterious and it's now on the table that it may in fact be artificial and is now a SETI target for Breakthrough Listen.
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Previous updates:
https://youtu.be/UQtn9c0o3i4
https://youtu.be/k7y65DyrsbY
https://youtu.be/7PNfcwvgoNI
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Cylinder Five by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
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It Came From Out There. Oumuamua, The First Interstellar Asteroid!

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On October 25, 2017, astronomers from NASA’s Minor Planet Center sent out an announcement that they needed help confirming the trajectory of an interesting object.
Known as C/2017 U1 PANSTARRS, the object was moving quickly through the Solar System, on a path that would take it out into deep space.
Astronomers were happy to oblige, providing dozens of observations within a few days, confirming that yes indeed, we were looking at the first asteroid that had come from interstellar space.
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Team: Fraser Cain - @fcain / [email protected]
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It turns out that C/2017 U1 PANSTARRS, later given the Hawaiian name Oumuamua, or “a messenger from afar arriving first”, had already made its closest pass to the Sun on September 9th, 2017, traveling at a top speed of 87.4 kilometers per second.
It whipped around the Sun, and then continued on its hyperbolic orbit out into deep space again. It passed near the Earth on October 14, then crossed the orbit of Mars on November 1st, by May 2018 it’ll be farther than Jupiter, and get past Saturn in early 2019.
Astronomers around the world have been making continuous observations of the asteroid, using some of the largest telescopes on Earth and in space. But they’ve got to work quickly, by mid-December, it’ll be too dim to observe with any of our instruments.

Hello, Goodbye, `Oumuamua - COSI Science Now

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*More clues about our interstellar visitor
Astronomers have released new details about a mysterious interstellar visitor which sped through our solar system during September and October. The new observations show the object -- known as 1i/2017 U1 -- measures some 180 by 30 meters and is shaped like a fat cigar, half a city block long.
*Why the star Regulus is almost ripping apart
A new study of the star Regulus indicates it’s almost spinning fast enough to literally rip itself apart.
The findings reported in the journal Nature Astronomy show the star has a spin rate of 96.5 per cent of its angular velocity needed for break-up.
*Another gravity wave discovery from merging black holes
Scientists have confirmed another detection of gravitational waves generated by the collision of two stellar mass back holes. This latest detection involved the merger of two relatively light black holes, with 7 and 12 times the mass of the Sun -- a billion light years away.
*Pluto’s freezer explained
A new study of Pluto’s atmosphere may explain why the dwarf planet at the outer rim of the solar system is so much colder than predicted. The findings indicate a novel cooling mechanism controlled by haze particles could account for Pluto’s frigid atmosphere.
*Pulsars ruled out of antimatter excess
Scientists have ruled out two nearby pulsars as possible sources for a mysterious excess of anti-matter particles discovered near Earth. In 2008, astronomers observed an unexpectedly high number of positrons -- the anti-matter counterparts to electrons -- in orbit just a few hundred kilometres above the planet.
*The Science Report
Explaining why people with autism find it difficult to look directly at other people
Claims salty diets may raise blood pressure by killing off gut bacteria.
The new study confirming that drinkers and smokers really do get old earlier.
The world’s largest dinosaur tracks.
The birth of modern wine-making traced back to early Tuscany.
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New Details about Interstellar Visitor on This Week @NASA – November 24, 2017

New data reveal that the interstellar asteroid that recently zipped through our solar system is rocky, cigar-shaped, and has a somewhat reddish hue. It’s the first confirmed object from another star observed in our solar system, and was discovered Oct. 19 by the University of Hawaii’s Pan-STARRS1 telescope team, funded by NASA’s Near-Earth Object Observations Program. The telescope team named it ‘Oumuamua (oh MOO-uh MOO-uh) – Hawaiian for “a messenger from afar arriving first.” The unusually-shaped asteroid, which is up to a quarter mile long and perhaps 10 times as long as it is wide, may provide new clues into how other solar systems formed. Also, Advanced Weather Satellite Launched, James Webb Space Telescope Completes Final Cryogenic Testing, Recurring Martian Streaks: Flowing Sand, Not Water? and Happy Thanksgiving, from Space!
This video is available for download from NASA's Image and Video Library: https://images.nasa.gov/details-NHQ_2017_1124_New%20Details%20about%20Interstellar%20Visitor%20on%20This%20Week%[email protected]%20%E2%80%93%20November%2024,%202017.html

Oumuamua asteroid unlike any object ever seen before

On October 19, the Pan-STARRS 1 telescope in Hawaii spotted something strange zooming through our solar system. It turned out to be a visitor from beyond our solar system, and it's unlike anything astronomers have seen before.
It is the first observed object from outside our solar system, according to a study published Monday in the journal Nature -- and, as the researchers call it, an "oddball."

THE SPACE BETWEEN MARS AND JUPITER — NASA says a recently discovered asteroid is our solar system's first interstellar visitor.
The asteroid was discovered by the Panoramic Survey Telescope and Rapid Response System in Hawaii on October 19, 2017.
NASA-funded research published in the journal Nature says it is the first interstellar object to enter our solar system and will travel inside it for over a year.
Scientists speculate the asteroid is 400 meters long, and around 40 m wide. A lot about it is unknown, but the asteroid could be made up materials like metals or rocks, and is likely to be billions of years old.
NASA says the asteroid will exit the solar system in January 2019 after passing through Saturn's orbit. It will next head for the Pegasus constellation.
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Astronomers Discover First Interstellar Object

Astronomers recently discovered a bizarre-looking object in our solar system that's unlike anything they've ever seen before. It's so peculiar that astronomers think it's not even from our solar system. They've dubbed this mysterious interstellar asteroid "Oumuamua."
Tech Insider tells you all you need to know about tech: gadgets, how-to's, gaming, science, digital culture, and more.
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--------------------------------------------------
Following is a transcript of the video:
This asteroid is not from around here. Turns out, it came from another star system. This is the first time humanity has observed an interstellar object.
Astronomers discovered it on Oct. 19. At first, they thought it was a comet. But its orbit was unlike anything ever seen before, and it was traveling at unusually high speeds: 85,700 mph.
So, astronomers reclassified the object as an interstellar asteroid. Asteroids in our solar system are usually round and lumpy. But this object probably looks more like a giant cigar. Observations suggest it's about a quarter mile long. Right now, it's about 124 million miles from Earth.
Over the next 2 years, it will pass by Jupiter and Saturn's orbits. Astronomers predict it will leave our solar system in Jan. 2019. Making its way into deep space toward the constellation Pegasus.
It may be the first interstellar visitor, but the bigger question is: Will it be the last?

Cigar-Shaped Asteroid is Our First-Confirmed Interstellar Visitor

In a report published Nov. 20 in Nature, astronomers confirm a rocky object passing through our solar system came from a different star.

Meet the first asteroid we’ve seen from outside our solar system

The remarkable discovery of Oumuamua opens a new window on solar systems beyond our own, say experts.…
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Is Dark Energy Getting Stronger?

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The power of Dark Energy may be increasing as the universe ages. Subtle clues are emerging that the accepted model for the nature of dark energy and dark matter may not be all that. We saw the first such clue recently in our recent episode on the Crisis in Cosmology. Today we’re doing a Space Time Journal Club to reveal another clue. We’re looking at a new paper in Nature Astronomy, “Cosmological constraints from the Hubble diagram of quasars at high redshifts” by Risaliti and Lusso. It hints that the cosmological constant may not be so constant after all. In fact it may be increasing. If this is true, then our prediction for the future of our universe looks VERY different, and may involve the entire universe tearing itself to shreds at the subatomic level in the Big Rip.
On this edition of Space Time Journal Club we look at:
Risaliti & Lusso (2019) "Cosmological Constraints from the Hubble Diagram of Quasars at High Redshifts"
https://www.nature.com/articles/s41550-018-0657-z
#darkenergy #darkmatter #spacetime
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سلطان الخليفي

NASA ScienceCasts: A Super Start to 2019

2019 is an excellent year to look to the sky and enjoy the spectacular view of Earth’s nearest neighbor, the Moon.
NASA Science: http://science.nasa.gov/

Do black holes contain dark matter?

Black holes grow by accreting matter under gravity; so surely they should be able to accrete dark matter? So then is there loads of dark matter trapped inside black holes?
Turns out it's a bit more complicated than that because of what we know of how dark matter behaves - which isn't a lot! - but it's enough.
This was a really fun speculative question to think about, especially because it ties in with my PhD thesis too. Let me know if you want me to do a video describing my thesis down in the comments.
Both my lapel microphones ran out of battery this week. Thankfully one of them didn't need a battery to use with a smartphone, so the sound was recorded that way. It's not brilliant I know, but it'll do. My research schedule this week stopped me from delaying filming until I could get a battery. The sound suffered so science wouldn't.
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Please subscribe if you haven't already and click the little bell icon to be notified when I post a new video!
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------
Dr. Becky Smethurst is a Junior Research Fellow at Christ Church at the University of Oxford.
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http://drbecky.uk.com

Space Weather News | A Filament Sandwiched by Sunspots 03.20.2019

UPDATE: Part of the filament I talk about did erupt after I posted this video! We could have a part-Earth directed solar storm coming by the end of this week! Check my twitter feed for the latest on arrival time!
Original Video Description:
This week we are coming down from a solar storm from some fast solar wind, but that doesn't mean the fun is over! We have two fast-growing sunspots on the Earth-facing Sun and they are sandwiching a filament that is growing more unstable by the day. If this filament erupts within the next day or so, we could have an Earth-directed solar storm! We are keeping a close watch on this to be sure. Also, one of the new sunspots may be showing signs of an influence of solar cycle 25. Just like the previous rogue sunspot we saw a few weeks ago, this new region has a dominant magnetic signature that runs north-south instead of east-west. Its too early to tell what the final polarity of this region will be, but if it continues this way, it will be yet another signal that solar cycle 25 is closer than we think! Learn the details of this filament sandwich, get the scoop on the two new sunspots that may cause its launch, and see what else our Sun has in store for us this week!
To get early access to my forecasts plus more visit:
http://patreon.com/SpaceWeatherWoman
For daily and often hourly updates (during active times) visit me on Twitter:
https://twitter.com/TamithaSkov
For a more in-depth look at the data and images highlighted in this video see these links below.
Solar Imaging and Analysis:
SDO: http://sdo.gsfc.nasa.gov/data/
Helioviewer: http://www.helioviewer.org/
Flare Analysis: http://www.lmsal.com/solarsoft/latest_events/
Computer Aided CME Tracking CACTUS: http://www.sidc.oma.be/cactus/out/latestCMEs.html
GOES Xray: http://www.swpc.noaa.gov/rt_plots/xray_1m.html
SOHO: http://sohodata.nascom.nasa.gov/
Stereo: http://stereo.gsfc.nasa.gov/
GONG magnetic field synoptic movie: https://gong.nso.edu/data/magmap/standard_movie.html
GONG magnetic field synoptic charts: http://gong.nso.edu/data/magmap/
LMSAL Heliophysics Events HEK http://www.lmsal.com/isolsearch
Solar Wind:
DISCOVR solar wind: http://www.swpc.noaa.gov/products/real-time-solar-wind
ACE Solar Wind: http://www.swpc.noaa.gov/products/ace-real-time-solar-wind
NASA ENLIL SPIRAL: https://iswa.gsfc.nasa.gov/IswaSystemWebApp/iSWACygnetStreamer?timestamp=2038-01-23+00%3A44%3A00&window=-1&cygnetId=261
NOAA ENLIL SPIRAL: http://www.swpc.noaa.gov/products/wsa-enlil-solar-wind-prediction
Magnetosphere, Ionosphere, Atmosphere:
GOES Magnetometer: http://www.swpc.noaa.gov/products/goes-magnetometer
Ionosphere D-Region Absorption (DRAP) model: http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap/
Auroral Oval Ovation Products: http://www.swpc.noaa.gov/products/aurora-30-minute-forecast
Global 3-hr Kp index: http://www.swpc.noaa.gov/products/planetary-k-index
Wing Kp index prediction: http://www.swpc.noaa.gov/products/wing-kp
USGS Ground Magnetometers: http://geomag.usgs.gov/realtime/
USGS Disturbance Storm-Time (Dst): http://geomag.usgs.gov/realtime/dst/
NAIRAS Radiation Storm Model: http://sol.spacenvironment.net/raps_ops/current_files/globeView.html
Multi-Purpose Space Environment Sites:
NOAA/SWPC: http://www.swpc.noaa.gov
SOLARHAM: http://www.solarham.net/index.htm
Spaceweather: http://spaceweather.com
iSWA: http://iswa.gsfc.nasa.gov/iswa/iSWA.html
Definition of Geomagnetic Storm, Radiation Storm, and Radio Blackout Levels:
http://www.swpc.noaa.gov/NOAAscales/
None of this would be possible without the hard work and dedication of those who have provided all of this data for public use.
Images c/o NASA/ESA/CSA (most notably the superb SDO, SOHO, ACE, STEREO, CCMC, JPL & DSN teams, amazing professionals, hobbyists, institutions, organizations, agencies and amateurs such as those at the USAF/HAARP, NICT, NOAA, USGS, Environment Canada, Natural Resources Canada, Intellicast, Catatania, rice.edu, wisc.edu, sonoma.edu ucalgary.ca, rssi.ru, ohio-state.edu, solen.info, and more. Thanks for making Space Weather part of our every day dialogue.

HiClip: In the Gullies and Bedrock of Ius Chasma (Mars)

This image was acquired in Ius Chasma, a major section of the giant Valles Marineris trough.
(Audio: www.tregibbs.com. Black and white images are 5 km across; enhanced color images are 1 km. For images with scale bars, refer to the link below.)
NASA/JPL/University of Arizona
https://uahirise.org/ESP_058580_1720

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